Two-wheeled vehicle and front fork with adjustable shock absorber

Abstract

The utility model relates to a two-wheeled vehicle and its front fork with adjustable shock absorber, including shock attenuation cylinder, built -in shock attenuation spring in shock attenuation cylinder, the top of shock attenuation cylinder is connected with the adjusting knob that rotates, and the adjusting knob is exposed to the outside of shock attenuation cylinder, and the one end of adjusting knob is inserted into shock attenuation cylinder, and directly pushes or transmission push shock attenuation spring deformation, the utility model provides the mode of directly pressing or transmission pressing shock attenuation spring, changes the deformation margin of shock attenuation spring, and the hardness that user feels when riding is adjustable.

Description

Technical Field

[0001] This utility model relates to the field of shock-absorbing front fork technology for two-wheeled vehicles, and in particular to a two-wheeled vehicle and its front fork with adjustable shock absorbers. Background Technology

[0002] Electric vehicles have rapidly gained popularity in recent years due to their advantages such as being lightweight, inexpensive, and environmentally friendly, becoming an indispensable means of transportation for citizens. In product development, different structures, functions, and shapes of front forks have emerged to meet different needs, such as performance comfort and low cost requirements.

[0003] Currently, domestic and international motorcycles and electric bicycles have front forks with different shapes, performance, and structures to improve riding comfort in different environments and with varying vehicle weights. Due to market demands for greater riding comfort in different electric bicycles, electric mopeds, and electric motorcycles, a single-specification front fork is insufficient to meet these needs. Designing and manufacturing separate front forks for each vehicle size would be costly. Therefore, a front fork with adjustable comfort settings is designed and developed to meet the needs of different vehicle types, environments, and consumers. Utility Model Content

[0004] In response to the shortcomings of the existing production technology, the applicant provides a two-wheeled vehicle and a front fork with an adjustable shock absorber, which can adjust the stiffness of the shock absorber spring. The adjustment end is exposed for easy manual operation, thereby improving the user experience.

[0005] The technical solution adopted in this utility model is as follows:

[0006] An adjustable shock absorber includes a shock absorber cylinder and a shock absorber spring built into the shock absorber cylinder. An adjustment knob is rotatably connected to the top of the shock absorber cylinder, and the adjustment knob protrudes from the outside of the shock absorber cylinder.

[0007] The adjustment knob extends into the shock absorber cylinder at one end, directly pushing or driving the shock absorber spring to deform.

[0008] As a further improvement to the above technical solution:

[0009] The adjustment knob has forward and reverse adjustment functions.

[0010] A solid pressure plate is pressed onto one end of the shock-absorbing spring near the adjustment knob; there is a clearance fit between the pressure plate and the inner wall of the shock-absorbing cylinder, and a sealing ring is installed on the contact surface between the pressure plate and the inner wall of the shock-absorbing cylinder; the adjustment pressure is transmitted to the shock-absorbing spring through the pressure plate.

[0011] The top of the shock absorber is screwed with an end cap, which seals the opening of the shock absorber; the adjustment knob extends through the end cap into the shock absorber.

[0012] The adjusting knob is screwed to the inner wall of the end cover, and the adjusting knob moves axially back and forth relative to the end cover.

[0013] The end of the adjustment knob that extends into the shock absorber contacts the pressure plate.

[0014] The adjusting knob extends into one end of the shock absorber cylinder, and a transmission assembly is installed between it and the pressure plate. The transmission assembly includes:

[0015] The gear rotates coaxially with the adjustment knob.

[0016] The rack meshes with the gear and is driven by the gear to reciprocate axially; the rack pushes the pressure plate.

[0017] The gear and the shock-absorbing spring are on the same plane, and the adjustment knob extends from the side wall of the shock-absorbing cylinder.

[0018] A fork with the aforementioned adjustable shock absorber.

[0019] A two-wheeled vehicle with the aforementioned front fork.

[0020] The beneficial effects of this utility model are as follows:

[0021] This invention adds an exposed adjustment knob to the shock absorber. When the adjustment knob is turned, the screw thread converts the rotational motion into axial linear motion, thereby pressurizing or releasing the shock-absorbing spring inside the shock absorber cylinder to adjust the shock absorption stiffness.

[0022] This utility model provides two implementation methods: one is an axially positioned adjusting knob, and the other is a radially positioned adjusting knob. The axially positioned adjusting knob protrudes beyond the shock absorber, facilitating manual adjustment and requiring less precision in hand movements. Furthermore, the top of the adjusting knob can partially cover the top of the shock absorber, reducing the risk of foreign objects falling in due to the end cap opening. Coaxial pressurization and release also result in more direct torque transmission.

[0023] The radially positioned adjustment knob uses a rack and pinion drive to compress the damping spring. With this radial design, the adjustment knob is located on the side of the damper, reducing the likelihood of hand movement interfering with the head tube during adjustment and making operation more convenient. Both designs have their advantages. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a front fork structure according to the present invention.

[0025] Figure 2 for Figure 1 The enlarged view of section A is used to show the position of the circumferential adjustment knob.

[0026] Figure 3 This is a cross-sectional view of the shock absorber cylinder in Embodiment 1 of this utility model.

[0027] Figure 4This is a schematic diagram of the axially arranged adjustment knob structure in Embodiment 1 of this utility model.

[0028] Figure 5 This is a schematic diagram of the radially arranged adjustment knob structure in Embodiment 2 of this utility model.

[0029] in:

[0030] 1. Shock absorber; 2. Shock absorber spring; 3. Adjusting knob; 4. Pressure plate; 5. Sealing ring; 6. End cap; 7. Gear; 8. Rack; 9. Head tube. Detailed Implementation

[0031] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0032] like Figures 1-5 As shown, the adjustable shock absorber of this embodiment includes a shock absorber cylinder 1, a shock absorber spring 2 built into the shock absorber cylinder 1, and an adjustment knob 3 rotatably connected to the top of the shock absorber cylinder 1, with the adjustment knob 3 protruding from the outside of the shock absorber cylinder 1.

[0033] The adjusting knob 3 extends into the shock absorber cylinder 1, directly pushing or driving the shock absorber spring 2 to deform.

[0034] Adjustment knob 3 has forward and reverse adjustment functions.

[0035] A solid pressure plate 4 is pressed onto one end of the shock-absorbing spring 2 near the adjusting knob 3; the pressure plate 4 is fitted with a clearance between itself and the inner wall of the shock-absorbing cylinder 1, and a sealing ring 5 is installed on the contact surface between the pressure plate 4 and the inner wall of the shock-absorbing cylinder 1; the adjustment pressure is transmitted to the shock-absorbing spring 2 through the pressure plate 4.

[0036] An end cap 6 is screwed to the top of the shock absorber 1, and the end cap 6 seals the opening of the shock absorber 1; the adjusting knob 3 extends through the end cap 6 and into the shock absorber 1.

[0037] The adjusting knob 3 is screwed to the inner wall of the end cover 6, and the adjusting knob 3 reciprocates axially relative to the end cover 6.

[0038] The end of the adjustment knob 3 that extends into the shock absorber 1 touches the pressure plate 4.

[0039] Adjustment knob 3 extends into one end of shock absorber 1, and a transmission assembly is provided between it and pressure plate 4. The transmission assembly includes:

[0040] Gear 7 rotates coaxially with adjusting knob 3.

[0041] The rack 8 meshes with the gear 7 and is driven by the gear 7 to reciprocate axially; the rack 8 pushes the pressure plate 4.

[0042] The gear 7 and the shock-absorbing spring 2 are coplanar, and the adjusting knob 3 extends from the side wall of the shock-absorbing cylinder 1.

[0043] The fork in this embodiment is equipped with the aforementioned adjustable shock absorber.

[0044] The two-wheeled vehicle in this embodiment is equipped with the aforementioned front fork.

[0045] The specific structure and working principle of this application are as follows:

[0046] Example 1:

[0047] like Figure 1 As shown, this is a front fork to which this application can be applied. Each side of the front fork is provided with a shock absorber 1, and the shock absorber 1 is provided with an adjustment knob 3 for adjusting the deformation of the shock absorber spring 2 inside the shock absorber 1.

[0048] like Figure 2 As shown, an adjustment knob 3 is inserted through the top of the shock absorber 1. (Refer to reference...) Figure 3 and Figure 4 An internal thread is provided on the inner wall of the top of the shock absorber 1, and an end cap 6 is provided on the top of the shock absorber 1. The end cap 6 includes a flanged portion that presses against the opening of the shock absorber 1 and an externally threaded tube section that extends into the shock absorber 1. The externally threaded tube section of the end cap 6 is screwed to the internal thread of the inner wall of the shock absorber 1 to form a sealed structure. A sealing ring 5 is also provided between the end cap 6 and the inner wall of the shock absorber 1.

[0049] The adjusting knob 3 is shaped like a screw, with external threads and a diameter larger than the top of the shock absorber 1. The adjusting knob 3 passes through the end cover 6 and is threadedly connected to the end cover 6. When the adjusting knob 3 is rotated, the adjusting knob 3 extends downward into the shock absorber 1 or is pulled upward out of the shock absorber 1.

[0050] To ensure that the damping spring 2 is pressed down or released by the adjusting knob 3, a pressure plate 4 is provided inside the damping cylinder 1. The pressure plate 4 presses on the upper end face of the damping spring 2, and the end of the adjusting knob 3 that extends into the damping cylinder 1 abuts against the pressure plate 4, ensuring that the end face of the damping spring 2 is subjected to uniform force and axial reciprocating motion.

[0051] When adjustment is needed, the spring stiffness can be adjusted by manually turning the adjustment knob 3.

[0052] Example 2:

[0053] The difference from Embodiment 1 is that, in this embodiment, the adjustment knob 3 is located on the side wall of the shock absorber 1 and extends radially into the shock absorber 1. The advantage of this lateral arrangement is that it provides more operating space for the hand and reduces the risk of the hand colliding with the head tube 9 due to rotation.

[0054] like Figure 5 As shown, in this embodiment, the adjustment knob 3 is located on the side wall of the shock absorber 1. For ease of reading, the head of the adjustment knob 3 is omitted from the figure.

[0055] Adjustment knob 3 extends into one end of shock absorber 1 and is coaxially connected to gear 7. The relative position of gear 7 and the inner wall of shock absorber 1 is constant. An axial rack 8 is provided on the inner wall of shock absorber 1, and rack 8 is located on the inner wall of end cover 6. To limit the axial reciprocating motion of rack 8, rack 8 can be embedded in the inner wall of end cover 6. When gear 7 rotates, it drives rack 8 to move axially.

[0056] At the end of the rack 8 near the damping spring 2, it abuts against or connects to the pressure plate 4. Since the rack 8 is eccentrically set in this embodiment, in order to ensure that the rack 8 can push the pressure plate 4, the bottom of the rack 8 can be welded to the pressure plate 4, or arc-shaped plates coaxial with the inner wall of the end cover 6 can extend from both sides of the rack 8. The end of the arc-shaped plate near the pressure plate 4 increases the contact area with the pressure plate 4, so that the damping spring 2 is subjected to more uniform force when the pressure plate 4 is pressed.

[0057] In this embodiment, the most preferred rack 8 configuration is as follows: the arc-shaped plates extending from both sides of the rack 8 extend to the side of the gear 7 away from the rack 8, thus avoiding the rotation space of the rack 8. That is, the projection of the rack 8 and the arc-shaped plates on the pressure plate 4 is an annulus with an opening, thereby applying the most uniform pressure to the damping spring 2.

[0058] The advantage of this application is that an exposed adjustment knob 3 is provided on the shock absorber 1, which allows for easy manual adjustment of the spring deformation, making it suitable for riding needs in different environments and according to different user preferences.

[0059] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. An adjustable shock absorber, characterized in that: Includes a shock absorber (1) and a shock absorber spring (2) built into the shock absorber (1). The top of the shock absorber (1) is rotatably connected to an adjustment knob (3), which protrudes from the shock absorber (1). The adjusting knob (3) extends into the damping cylinder (1) and directly pushes or drives the damping spring (2) to deform.

2. The adjustable shock absorber as described in claim 1, characterized in that: The adjustment knob (3) has forward and reverse adjustment functions.

3. The adjustable shock absorber as described in claim 1, characterized in that: A solid pressure plate (4) is pressed onto one end of the shock-absorbing spring (2) near the adjusting knob (3); the pressure plate (4) and the inner wall of the shock-absorbing cylinder (1) are fitted with a clearance, and a sealing ring (5) is installed on the contact surface between the pressure plate (4) and the inner wall of the shock-absorbing cylinder (1); the adjustment pressure is transmitted to the shock-absorbing spring (2) through the pressure plate (4).

4. The adjustable shock absorber as described in claim 3, characterized in that: The top of the shock absorber (1) is screwed with an end cap (6), which is sealed at the opening of the shock absorber (1); the adjusting knob (3) extends through the end cap (6) into the shock absorber (1).

5. The adjustable shock absorber as described in claim 4, characterized in that: The adjusting knob (3) is screwed to the inner wall of the end cover (6), and the adjusting knob (3) moves axially back and forth relative to the end cover (6).

6. The adjustable shock absorber as described in claim 5, characterized in that: The end of the adjustment knob (3) that extends into the shock absorber (1) touches the pressure plate (4).

7. The adjustable shock absorber as described in claim 3, characterized in that: The adjusting knob (3) extends into one end of the shock absorber (1), and a transmission assembly is provided between it and the pressure plate (4). The transmission assembly includes: Gear (7) rotates coaxially with adjusting knob (3). The rack (8) meshes with the gear (7) and is driven by the gear (7) to reciprocate axially; the rack (8) pushes the pressure plate (4).

8. The adjustable shock absorber as described in claim 7, characterized in that: The gear (7) and the shock absorber spring (2) are coplanar, and the adjustment knob (3) extends from the side wall of the shock absorber cylinder (1).

9. A front fork, characterized in that, It includes an adjustable shock absorber as described in any one of claims 1-8.

10. A two-wheeled vehicle, characterized in that, It features a fork as described in claim 9.

Images